Chinese 80, math 94, English 86, common sense 90. Suppose that the unknown quantities of language, numbers, English and common sense are X, Y, A and B respectively. According to the known conditions, four equations can be established simultaneously. X+Y=2 times 87; Y+A=2 times 90; A+B=2 times 88; B-X= 10. Four unknowns are obtained from the solution. Subtract the second formula from the first formula, A-X=6, which is the fifth formula. The fourth formula is expressed as X=B- 10, and the fifth formula is A-B=-4, which is the sixth formula. Combined with the third formula, the solution is A=86 and B=90. Substitute X=80 into the fifth formula and Y=94 into the first formula.

Pure hand, I hope the landlord will adopt it! (^-^)